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Key Largo

$78+ Cheap flights from San Jose (SJC) to Key Largo, FL

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — MIA
Jul 21 — Jul 281
Mon 7/21
Mon 7/28
1 adult, Economy
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Cheapflights Tip: The best prices from San Jose to Key Largo are usually found in September or January, booked 34 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from San Jose to Key Largo

Keep the following information in mind while searching for San Jose to Key Largo flight deals. Data was last updated July 16, 2025.

Round-trip from

$181
(Cheapflightsfares)

One-way from

$78
(Cheapflightsfares)

Popular in

April

Cheapest in

September

Average price

$447
From San Jose to Key Largo
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One-way flight from San Jose to Key Largo
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Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from San Jose to Key Largo

Cheapest flights from San Jose to Key Largo
Explore the most affordable flight options available from San Jose to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amSJC - MIA
1 stop9h 26mSpirit Airlines
Mon 10/66:28 pmMIA - SJC
1 stop15h 52mSpirit Airlines
Deal found 7/14$181
This Priceline deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/147:00 pmSJC - MIA
1 stop7h 45mFrontier
Sun 8/176:00 amMIA - SJC
1 stop8h 22mFrontier
Deal found 7/13$279
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/235:01 pmSJC - MIA
1 stop10h 26mDelta
Sun 8/317:45 amMIA - SJC
1 stop9h 52mDelta
Deal found 7/15$299

Cheapflights Fare Finder

Customize your flight search to find flights from San Jose to Key Largo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 16, 2025.
Use the filters below to find and compare flights from San Jose to Key Largo that are best for you.

Fly from

San Jose

Fly to

Key Largo

Route

Depart

Return

Price

San JoseMiami

SJC - MIA

SJCMIA

San Jose

Fri 10/3

6:00 am-6:26 pm

1 stop9h 26m

Miami

Mon 10/6

6:28 pm-7:20 am

1 stop15h 52m

$181

San JoseMiami

SJC - MIA

SJCMIA

San Jose

Thu 8/14

7:00 pm-5:45 am

1 stop7h 45m

Miami

Sun 8/17

6:00 am-11:22 am

1 stop8h 22m

$279

San JoseMiami

SJC - MIA

SJCMIA

San Jose

Sat 8/23

5:01 pm-6:27 am

1 stop10h 26m

Miami

Sun 8/31

7:45 am-2:37 pm

1 stop9h 52m

$299

San JoseMiami

SJC - MIA

SJCMIA

San Jose

Thu 9/18

8:15 am-6:26 pm

1 stop7h 11m

$78

San JoseMiami

SJC - MIA

SJCMIA

San Jose

Thu 9/11

2:09 pm-12:44 am

1 stop7h 35m

$92

San JoseMiami

SJC - MIA

SJCMIA

San Jose

Sat 8/30

12:30 pm-12:24 am

1 stop8h 54m

$141

San JoseMiami

SJC - MIA

SJCMIA

San Jose

Wed 10/29

8:45 am-9:59 pm

1 stop10h 14m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Best time to book a flight from San Jose to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from San Jose with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Jose to Key Largo

How far ahead should I book a flight from San Jose to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from San Jose to Key Largo. Price data was last updated on July 11, 2025.

Booking 23 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Jose to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Jose to Key Largo?

Currently, September is the cheapest month in which you can book a flight from San Jose to Key Largo (average of $232). Flying from San Jose to Key Largo in March is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJC to KE9?

Find hourly flight availability from San Jose to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Jose to Key Largo as you normally would.

What is the cheapest day to fly from San Jose to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from San Jose to Key Largo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Jose to Key Largo flight should consider departing on Monday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key Largo. Reviews last updated July 16, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Spirit Airlines from San Jose to Key Largo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
United Airlines
7.4
Good
8,863 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Spirit Airlines
6.3
Okay
8,045 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Frontier
5.9
Fair
3,256 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

Find useful and relevant information for your journey from San Jose to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Jose to Key Largo?

    Located just 2.9 mi from the city center, San Jose is the airport most travelers will use when flying to Key Largo from San Jose. Booking flights from San Jose (SJC) to Key Largo should be relatively easy as there are 0 daily outbound flights to Key Largo from 8 different airlines.

  • What are the cheapest airlines to fly from San Jose to Key Largo one-way?

    One-way options have recently been found by users for as low as $78 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $92 and Delta from $141 one-way.

  • Can I find deals for flights from San Jose to Key Largo that include hotel bookings?

    Yes. In addition to deals on San Jose to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Key Largo.

  • Can I find deals for business class flights from San Jose to Key Largo?

    Yes. Cheapflights offers flight deals from San Jose to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Jose to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from San Jose to Key Largo (average of $232). Flying from San Jose to Key Largo in March is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 8 airlines flying from San Jose to Key Largo

Discover the top 8 airlines that operate flights from San Jose to Key Largo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$144Average$481FlexibilityNo cancel feeOn-time69%
FrontierCheapest$146Average$198FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$156Average$319FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$168Average$365FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$245Average$626FlexibilityNo cancel feeOn-time75%
DeltaCheapest$256Average$466FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$256Average$493FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$350Average$552FlexibilityNo cancel feeOn-time63%

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